12-letter words containing i, a, t, r
- antipyretics — Plural form of antipyretic.
- antiquarians — Plural form of antiquarian.
- antirachitic — preventing or curing rickets
- antirational — opposed to rationalism
- antireformer — One who opposes reform.
- antireligion — opposed to religion
- antiroll bar — a horizontal bar in the suspension system of some automotive vehicles, that stabilizes the body of the vehicle and thereby reduces sway, esp. during turns
- antiromantic — opposed to romanticism
- antiroyalism — Opposition to royals or royalism.
- antiroyalist — opposed to the monarchy
- antirrhinums — Plural form of antirrhinum.
- antispinward — (often science fiction) In a rotating reference frame, against the direction of spin.
- antistrophes — Plural form of antistrophe.
- antistrophic — Of or pertaining to an antistrophe.
- antistrophon — an argument that is retorted against an opponent
- antisway bar — stabilizer bar.
- antisymmetry — the correspondence in size, form, and arrangement of parts on opposite sides of a plane, line, or point; regularity of form or arrangement in terms of like, reciprocal, or corresponding parts.
- antitakeover — opposed to or acting against a takeover
- antithrombin — a substance that counteracts the action of thrombin, preventing the formation of blood clots
- antitumoural — acting against or upon tumours
- anton sailer — Anton [ahn-tohn] /ˈɑn toʊn/ (Show IPA), ("Toni") 1935–2009, Austrian skier.
- aortic valve — a semilunar valve between the aorta and the left ventricle of the heart that prevents the blood from flowing back into the left ventricle.
- aortographic — relating to an aortography or aortography
- apartmentize — to build apartments on or in: to apartmentize the downtown area.
- aperiodicity — not periodic; irregular.
- aphoristical — Alternative form of aphoristic.
- apiculturist — beekeeping, especially on a commercial scale for the sale of honey.
- apochromatic — (of a lens) almost free from spherical and chromatic aberration
- apostle bird — a gregarious grey-and-brown Australian nest-building bird, Struthidea cinerea
- apostrophise — to address by apostrophe.
- apostrophize — to address an apostrophe to
- apothecaries — Plural form of apothecary.
- apparatchiks — a member of an apparat, especially in a Communist country.
- apparitional — of or relating to an apparition or apparitions; ghostly, spectral
- apperception — the attainment of full awareness of a sensation or idea
- apperceptive — conscious perception.
- appercipient — having or using apperception
- appertaining — to belong as a part, right, possession, attribute, etc.; pertain or relate (usually followed by to): privileges that appertain to members of the royal family.
- appletviewer — (web, testing) A simplified web browser used for testing applets. You can't browse HTML with it but you can run applets to test them before embedding them in a web page.
- applied arts — arts that are put to practical use
- appoggiatura — an ornament consisting of a nonharmonic note (short or long) preceding a harmonic one either before or on the stress
- apportioning — Present participle of apportion.
- appraisement — the act of estimating or judging the nature or value of something or someone.
- appreciating — to be grateful or thankful for: They appreciated his thoughtfulness.
- appreciation — Appreciation of something is the recognition and enjoyment of its good qualities.
- appreciative — An appreciative reaction or comment shows the enjoyment that you are getting from something.
- appreciators — to be grateful or thankful for: They appreciated his thoughtfulness.
- appreciatory — appreciative.
- apprenticing — Present participle of apprentice.
- apprentisage — Obsolete form of apprenticeage.